(19)
(11) EP 4 496 643 A1

(12)

(43) Date of publication:
29.01.2025 Bulletin 2025/05

(21) Application number: 23714079.3

(22) Date of filing: 20.03.2023
(51) International Patent Classification (IPC): 
B01D 53/04(2006.01)
B01D 39/00(2006.01)
B01D 53/86(2006.01)
 A61L 9/16(2006.01)
B01D 53/32(2006.01)
B03C 3/00(2006.01)
(52) Cooperative Patent Classification (CPC):
B01D 53/0407; B01D 53/323; B01D 2258/06; B01D 2259/818; A61L 9/16; B01D 53/76; B01D 2257/406; B01D 2251/70; B03C 3/08; B03C 3/12; B03C 3/41; B03C 3/47; B03C 3/60; B03C 3/30; B03C 2201/04; B01D 46/48; A61L 2209/14
(86) International application number:
PCT/FI2023/050158
(87) International publication number:
WO 2023/180627 (28.09.2023 Gazette 2023/39)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 21.03.2022 FI 20225249

(71) Applicant: Teknologian tutkimuskeskus VTT Oy
02150 Espoo (FI)

(72) Inventors:
  • KULMALA, Ilpo
    02150 Espoo (FI)
  • HEINONEN, Kimmo
    02150 Espoo (FI)
  • SALMELA, Hannu
    02150 Espoo (FI)

(74) Representative: Laine IP Oy 
Porkkalankatu 24
00180 Helsinki
00180 Helsinki (FI)

   


(54) COLLECTION UNIT FOR AN AIR FILTRATION SYSTEM, AIR FILTRATION SYSTEM AND METHOD OF PRODUCING A COLLECTION ELEMENT